Improvement in securing carriage-wheels to axles



. E. P. HOYT. V SECURING CARRIAGE WHEELS T0 AXL'BS.

i No. 33,251. x Patent-ed Sept. 10,1861.

Wwm- 17mm UNITED STATES PATENT. OFFICE.

EZRA P. IIOYT, OF NEW YORK, N. Y..

$pecificationforming part of Letters Patent No. 33,251 dated September 10, 186].

.T 0 all whom it may concern.-

' Be it known that I, EZRA P. I-IOYT, of the city, county, and State of New York, have invented a new and Improved Mode of Securing Hubs on Axle-Trees of Wagons and other Vehicles, and for. other Purposes; and-I do hereby declare the following to be a full description of the same.

The natureof my invention consists in the use of a right-and-left screw formed on the end of the axle-tree, in combination with a right-and-left nut, so that the reversal of motion of the axle-tree to unscrew the inside nut causes the; screwing up of the'outer nut, and thus prevents the possibility of the wheel getting'olf the axle-tree; but to describe my invention more particularly I will refer to the accom panying drawings,foru1inga partof this specification, the same letters of reference, wherever they occur. referring to like parts.

Figure 1 isa side view 06 the axle-tree with nuts attached. Fig. 2 is an end View. Fig. 5 isa longitu'dinalcut section of the-axle-tree, showing at the left side of the figure a inodified application of the right. and left SCI'QW'. threads. Fig. 4 is a detached view of the end of the axle-tree. Fig. 5 is a plan View of the inner face of the inside screw-nut. Fig; dis a plan view of the inner face of the outside nut. Fig. 7 is a side elevation of the nuts, showing in skeleton the spring pawl or detent for engaging into the ratchet on the inside nut. Fig.8 is a side elevation of the inside nut.

Letter A is the'axle-tree, ha\-'inga-right and left screw B and C out on its end. At theend. of the axle A Fig. 3, the outernut E is formed with a tap G,'which 'is inserted into a female screw formed in the end of the axle. Under some circumstances this mode of securing the nuts to the end of the axle-tree may be desirable; but I do not esteem it the best,

though embracing the same principles of operation as exhibited at the opposite end of f the axle-tree, and have therefore referred to it in. this connection to cover it as a part-of my complete device.

Letter D is the inside nut. On. its innerface is formedacircular ratchet F, into which engagesaspringpawl H, secured in an annular I groove I in theiuner face of the outer nut E. This pawl is worked on a center pin J, passing through the side of the nut, and has at the back of it, in a suitable recess, a small spring K, so as tokeep the point of the pawl always in contact with the ratchet. For-the purpose of liberating the pawl from' its contact with the ratchet-teeth, a stem L is formed on its back end, so as to extend through theface of the nut, and which is operated by a wrench,

having a suitable device attached thereto, at any time when the nut is to be taken 0h".

The operation of the pawl and ratchet is to lock the two nuts together and thus prevent any independent action in either of the nuts.

It will thus be seen that not onlythe security of the right and left nuts is obtained by an independent device,but that bytheoperations of the ratchetand pawl the combined actions of both are secured as one device immovably fixed against separating the partslunless the detent-pawl is released from the ratchet.

Having now described my invention and its operation and modeof constructiom-I will 'proceed to set forth what I claim and desire to secure by Letters Patent of the United States- "The combination of the right and left hand screw-nuts D and E, made and operating in the manner set forth, and for the purposes hereinbefore described.

. EZRA, P.v I-IQYT.

Witnesses: n CHARLES L. BARRITT, JAiins G. GooPER. 

